// 关于我们
.us {
    width: 70%;
    margin: 0 auto;
    background-color: #fafafa;
    box-sizing: border-box;
    padding-top: 25px;
    padding-bottom: 10px;

    .us-box {
        width: 90%;
        margin: 0 auto;

        .title,
        .title2 {
            width: 145px;
            height: 35px;
            margin: 0 auto;
            position: relative;
            margin-bottom: 20px;

            img {
                position: absolute;
                top: 15px;
                left: 0px;
                width: 100%;
                height: 100%;
            }

            .font {
                font-size: 23px;
                color: #000;
                text-align: center;
                font-weight: 600;
                background-color: #fafafa;

                span {
                    font-size: 12px;
                    display: block;
                }
            }
        }

        .title2 {
            margin-top: 22px;
        }

        .content {
            box-sizing: border-box;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;

            .left,
            .middle,
            .right {
                width: 30%;
                background-color: #f2f2f2;
                text-align: center;
                box-sizing: border-box;
                padding: 18px 12px;

                .small-title {
                    color: #000;
                    font-size: 16px;
                    margin-top: 15px;
                    font-weight: 600;
                }

                .english-title {
                    color: #000;
                    font-size: 12px;
                    font-weight: 600;
                }

                .about {
                    margin-top: 15px;
                    font-size: 12px;
                    color: #838383;
                    text-align: left;
                }
            }
        }
    }
}

// 更多案例
.portfolio {
    width: 70%;
    margin: 0 auto;
    box-sizing: border-box;
    padding-bottom: 45px;

    .portfolio-box {
        width: 90%;
        margin: 0 auto;

        .content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;

            .item {
                text-align: center;
                width: 32%;
                font-weight: bold;
                box-sizing: border-box;
                padding-top: 22px;

                img {
                    width: 100%;
                    height: 210px;
                    border: 2px solid #000;
                }

                .small-title {
                    font-size: 12px;
                    color: #000;
                    box-sizing: border-box;
                    padding-top: 15px;
                    padding-bottom: 15px;
                }

                .button {
                    width: 135px;
                    height: 27px;
                    margin: 0 auto;
                    line-height: 27px;
                    background-color: #6db6ff;
                    cursor: pointer;

                    a {
                        color: #fff;
                    }
                }
            }
        }
    }
}

// 友情链接
.link {
    width: 70%;
    margin: 0 auto;

    .link-box {
        width: 90%;
        margin: 0 auto;
        position: relative;
        border: 1px solid #000;
        box-sizing: border-box;
        padding-bottom: 100px;

        .bg {
            position: absolute;
            top: 0px;
            left: 0px;
            width: 100%;
            height: 100%;
            z-index: -2;

            img {
                width: 100%;
                height: 100%;
            }
        }

        .bgzz {
            width: 100%;
            height: 100%;
            position: absolute;
            background-color: #000;
            opacity: .5;
            z-index: -1;
        }

        .title {
            width: 145px;
            height: 35px;
            margin: 0 auto;
            position: relative;
            margin-bottom: 55px;
            margin-top: 30px;

            img {
                position: absolute;
                top: 15px;
                left: 0px;
                width: 100%;
                height: 100%;
            }

            .font {
                font-size: 23px;
                color: #fff;
                text-align: center;
                font-weight: 600;

                span {
                    font-size: 12px;
                    display: block;
                }
            }
        }

        .list-box {
            display: flex;
            flex-wrap: nowrap;
            justify-content: space-between;
            width: 85%;
            margin: 0 auto;

            .list {
                width: 30%;
                height: 80px;

                img {
                    width: 100%;
                    height: 100%;
                }
            }
        }
    }
}

@media screen and(max-width:1024px) {
    .us {
        .us-box {
            .content {

                .left,
                .middle,
                .right {
                    width: 31%;
                }
            }
        }
    }

    .portfolio {
        .portfolio-box {
            .content {
                .item {
                    width: 48%;
                }
            }
        }
    }
}

@media screen and(max-width:768px) {
    .us {
        .us-box {
            .content {

                .left,
                .right,
                .middle {
                    padding: 18px 9px;

                    img {
                        width: 70px;
                        height: 70px;
                    }
                }

            }

        }
    }

    .portfolio {
        .portfolio-box {
            .content {
                .item {
                    img {
                        height: 150px;
                    }
                }
            }
        }
    }

    .link {
        .link-box {
            padding-bottom: 70px;

            .list-box {
                .list {
                    height: 70px;
                }
            }
        }
    }
}

@media screen and(max-width:415px) {
    .us,
    .portfolio,
    .link {
        width: 100%;
    }

    .us {
        .us-box {
            .content {
                flex-direction: column;

                .left,
                .right,
                .middle {
                    width: 80%;
                    margin: 10px auto;
                    padding: 18px 18px;
                }
            }
        }
    }

    .portfolio {
        .portfolio-box {
            .content {
                .item {
                    width: 80%;
                    margin: 10px auto;
                }
            }
        }
    }

    .link {
        .link-box {
            padding-bottom: 60px;

            .list-box {

                .list {
                    height: 60px;
                }
            }
        }
    }
}